Big Exhaust for Excursion

[redoil]

Does anyone have experience with 4 inch exhaust system on an Excursion psd? I am wondering what the noise is like in the cab. My wife thinks that the stock noise is too loud as it is.

[DA BUS]

I have the Magnaflow 4", turbo back in stainless steel. I really don't think the exhaust note is louder than stock in cruise and idle modes. It might be a little louder at WOT. Now outside the truck -- WHOOOOAH! Much louder!

What do the bikers say? "Loud exhausts save lives" Everyone will know you're coming down the road for sure...again

If you're considering a new exhaust at all, I really suggest an upgrade like I did. My EGT's did go down, even before I added the programmer. The fit and finish are excellent. The 5" tip looks pretty awesome too! A lifetime warranty is also offered on those (probably on everybody's exhaust systems now anyway).

I can't speak for the other brands out there, but I know for a fact my Magnaflow came right out of the box and on the the truck. We spot welded the joints before clamping, but that really wasn't necessary -- I just get anal sometimes. I knew it would fit right because of my great experience with Magnaflow on my Cadillac CTS-V. Out of the box and on to the car -- that's it.

[Marty]

I've never put one on an excursion - all of my experience is with SuperDuties... BUTTT I'm sure I could give you a hand I've done a few, so it'd probably go smoothly.

[redoil]

thnx. I will have to modify the tail pipe. I have a "Pull-Rite" hitch system -- that a trolly-type hitch that has a track that hangs under the factory receiver. So its in the way of the final 12 inches of the tail=pipe. I had to cut the stock pipe and re-weld it to fit -- so I'm concerned about a big 5 inch tip -- even a 4 inch pipe. I don't know if I can take it out the side by the tire and still be legal.

[Marty]

lol it will be legal. Honestly I'd just straight pipe your factory exhaust or use a BTM (to stay legal) if you're not going for race power gains...

[redoil]

I'm wondering if I should but a Magnaflow or Banks system and then cut up the tail pipe or just try to find a local shop to custom make a system. I actually have a plasma cutter and mig welder.

[Marty]

You could modify a 4" system so that it hangs out over your rear axle and then you could put a 4" turndown on it... so that it dumps right behind the rear axle.

[redoil]

BTM? Sorry I am a newbie.

[slammedSI]

ya could talk to stump. he has one but its got the 6.0. and his is dumped off the downpipe.

[Marty]

BTM = big truck muffler - it's just a straight thru muffler...


and he doesn't want it to be loud... I've run with just the downpipe and it's entirely too loud.

You want to get that pipe at least to the rear axle or further back to nullify the sound.